Figure 9. Involvement of the DLP hairpin in signaling the initiation codon.
(A) HAP1 WT, HAP1-eIF2A− and HAP1-eIF2D− cells were transfected with in vitro synthesized replicons rep C + luc, rep C + luc (ΔDLP), rep C + luc (Met-Leu) or rep C + luc (Met-Leu-ΔDLP). The DLP structure and the mutations introduced to generate the variant ΔDLP are indicated in Fig. 7B. At 7 hpt, cells were collected in loading buffer and analyzed by western blotting with an anti-C antibody. The mobilities of the C products derived from the different replicons are indicated by arrows. (B) Densitometric analysis of the different C proteins synthesized by the replicons in relation to the canonical product of C synthesized by rep C + luc in each cell line. The results are displayed as mean ± SD of three representative experiments.